map of all the participating cabs in the city. >> push one button. one that is nearest to you gets assigned to you and dispatched to you. >>reporter: technology around for 2 years. some cab company were using it before the app for call black town cars. back then it was called cab lus now with the ceremony drive off it's being reborn as fly wheel. complete with bold new advertising and promise to help cabie compete with the black cars and lift drivers with the pink mustache. >> they get from 20 to 30 percent more rides a day by having these mobile app able to access the vehicle real time. >>reporter: already in about a third of san francisco taxi. as to the other communication device. >> this is a radio. no advancement in 50 years on uhf and now we have the power of cell phone. >>reporter: cab company fly wheel can replace older dispatch systems or work alongside the 2 way radio to give the dispatchary bird eye view of where the drivers are by working with dispatcher instead of around them they get broad support from cab company. we while lift uber an